Can I make 500hp. N/A???

[Killer89coupe]

Building a 383 SBC.
010 factory 4 bolt main block,
Scat stroker w 5.7" rod. SRP Flat tops,
64cc Victor Jr. heads 23* 2.08 intake 1.60exhaust. Want to raise compression by cutting heads more.
Heads are box stock. Victor Jr. intake, 1.7/8" primary w/ 3.5 collector headers.
Custom Hyd. roller cam. TH350 tranny, Custom converter, 3.7's in a 89 S-10.
Want to put some nitrous on this setup also.
Any idea or changes you guys would make?
Gonna mostly be a strip ride, but will ride it on the street some.
Thanks in advance.
YBBitch:

[5678TA]

compression?? cam specs?? carb??

i would say 750DP, 10.5:1, 230-245* and .500+ lift you got it..

[5678TA]

exhaust big enough?? 1.3/4" with 3" collectors would be better.. you're setup for 750+hp..

[Killer89coupe]

The compression is going to be around 11to1 right now without shaving the heads any. Would like to see 12.0 or 12.5 to 1
Cam is still up in the air, so is the carb. size. Make suggestions.
So, the headers are going to be to big?

[5678TA]

with that much compression and a roller cam, you better make 500hp.. any reason for going hyd. roller instead of solid roller?? carb is hard to tell.. if you need help with that and want a good street/strip carb, i would talk to patrick at ProSystems.. he's known to setup carbs almost perfectly to your combo.. but if you are on a budjet, it might be a little pricey.. he would probably set you up with a 950HP.. i got quoted $690.. heres my email from him.. my setup is weaker than yours so he may set you up with a 1000HP..

For your program, we can build you one of our PRO
SERIES XC series HP double pumpers priced at only
$690.00

This HP main body equipped carburetor offers great
performance, incredibly quick throttle response and
can be set up to be perfect for your application.

It has our adjustable air bleed configuration,
non-stick gaskets, drag float, jet extensions, big
throttle blade equipped Red billet baseplate (for more
top end charge) , a complete wet-flow portfolio (for
easy jet selection, but we're usually dead on or
within 2 jet sizes), a real sharp piece with stepped
dog leg boosters, hi-flow needle and seats. Just bolt
on and go.

Typically I see a 10-30 hp improvement over an off
the shelf unit with much better consistency, EXCELLENT
driveability and if the need arises you can spray it
up to a 350 shot.

We'll size it for the exact cfm range when it is on
the wet flow bench to match your programs needs. But
it'll probably end up being in the 840-860 REAL cfm
range.

if you are serious about that nitrous, then leave the 1.7/8" in there.. it should be good for strip.. but street time will suck.. that big of a primary will not be nice down low..

[Killer89coupe]

Not really made up my mind on hyd. or solid roller.
Will the extra HP. be worth the extra money over a hyd. roller?
Don't want it to sound like I'm being cheap, just want the most for my money.

[5678TA]

is it really that much more expensive to go solid from hyd?? i never really looked into hyd roller setups.. but like always, you could just go talk to a cam guy and see what would be best.. i think theres a cam section on this forum.. try posting a thread on there and see what happens.. those guys can give you definite answers..

i have no experience with anything other than solid flat cams.. even that is nill..

[Scott McMullen]

Solid Roller No Question Get the Cam up in the .660 lift range with 260* of duration At .50 headders are big but if you have them use them. if you Don't make 500+ with what you have and a Good Carb and a Cam Like i have mentioned somethings wrong!

[MOPARPARTS]

GO WITH THE SOLID ROLLER CAM FOR SURE,IF YOUR GOING TO SPIN IT PAST 6000 RPMS THE HYDRO ROLLERS WILL NOT MAKE THE POWER THE SOLIDS WILL MAKE,

[Killer89coupe]

Who do you guys recommend to port the SBC Victor Jr. heads and intake?
I'm a Ford man, so this Chevy stuff is new to me...
Post up names and numbers to who you guy suggest for the job.
Thanks again guys. Yall are the best.
Killa.

[5678TA]

you're not getting numbers or people out of me because i do my own porting.. why pay an arm and a leg for something that can be done by yourself? vic. jr's flow pretty well out of the box so i would just do a nice polish job.. i see no need for a full port and polish job if you are only going to 500hp NA.. and just port the intake to match the gasket..

but thats just what I would do..

[Killer89coupe]

I'm wanting to make all the power possible. 500 was just kinda a starting point.
Like I said, I'm a Ford man. Chevy's are new to me.
I really do apperciate your help so far.

[xdamxincx]

im doing 2 motors right now with pretty much same set up .. the vic jrs low lift numbers arent great .. and we flowed them and they are less then what is advertised.. the combustion chambers are what need the most attention i think .. unshroud the valves and the low lift numbers will pick up..

these heads arent really a desireable head and no cnc programs for them from what i've gathered... and not really worth an all out port compared to what dart and afr sell out of the box..

we just did a mild port and 5 angle valve job.

[Scott McMullen]

im doing 2 motors right now with pretty much same set up .. the vic jrs low lift numbers arent great .. and we flowed them and they are less then what is advertised.. the combustion chambers are what need the most attention i think .. unshroud the valves and the low lift numbers will pick up..

these heads arent really a desireable head and no cnc programs for them from what i've gathered... and not really worth an all out port compared to what dart and afr sell out of the box..

we just did a mild port and 5 angle valve job.It seems that all Chevy Edlebrocks Have this Problem. If you unshroud the numbers do pick up but its what you have port them and Use them:)

[qwiknotch]

I would have gone with a set of AFR227's or even some Brodix -11, but the Jr's will support 500hp.
Or even Dart Pro1's.....
A solid roller setup will actually be about the same price.
The hyd cam is more money and the lifters are about the same price.
The springs will be the only cost difference.
You could probably pick up a decent used roller cam and lifters

[Killer89coupe]

AFR's are way more expensive. And this kid is on a budget.
I would just like to make the best with what I've got.

[xdamxincx]

Solid Roller No Question Get the Cam up in the .660 lift range with 260* of duration At .50 headders are big but if you have them use them. if you Don't make 500+ with what you have and a Good Carb and a Cam Like i have mentioned somethings wrong!

yea solid roller is the way to go . but 650 is max lift for the stock springs.. we did a 262 272 with a 112 centerline.. should run good for a street car.

[Ed-vancedEngines]

I can't possibly figure how you could get less than 500 hp with just what you have. I think those Edlebrocks can benefit from a good pocket porting and some minor tootsie rolling in the ports. I will definely agree with opening the chambers to unshroud the valves as long as you don't open them beyond the the cylinder walls.

I guess as usual I will be in disagreement with almost eveyone here, about using the Hydraulic Roller Cam. It is however more expensive to go Hyd Roller because those lifters in any brand you need a bank loan to get. Maybe not but it seems like it. I have no problem with engines fairly similar to yours revving to and shifting at 6,800 - 6,900 rpm with the Hyd Cams and my way of setting up the springs. With a rev-kit you may get more even. With the Hyd Rollers the valve lash adjustments needed will be seldom. I have engines similar right now still racing that have never even had to do a valve adjustment after 5 years of street racing and drag strip racing at least two meets per month and frequently on the street using Hyd Rollrs and revving and shifting all the time at 6,800 rpm. So they can have some good points to them too.

I will agree though that you can likely get more power from a good well matched solid roller cm setup.

With that combination and with that compression you should be at 500 hp and maybe more.

Ed